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de Havilland Canada DHC-4 Caribou

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DHC-4 Caribou
The C-7 Caribou
Type STOL Transport
Manufacturer de Havilland Canada
Maiden flight 30 July 1958
Introduced 1961
Primary users United States Army
Royal Australian Air Force

The Canadian-designed and produced de Havilland Canada DHC-4 Caribou (known in the U.S. military as CV-2 and C-7 Caribou) was designed as a specialized transport with short takeoff and landing (STOL) capability. The Caribou was first flown in 1958 and although mainly retired from military operations, is still in use in small numbers as a rugged "bush" aircraft.

Design and development

File:C7Caribou Fort Eustis 2008.JPG
A C7 Caribou in the Army Transportation Museum, Fort Eustis, VA.

de Havilland Canada's third STOL design was a big step up in size compared to its earlier DHC Beaver and DHC Otter, and was the first DHC design powered by two engines. The Caribou, however, was similar in concept in that it was designed as a rugged STOL utility. The Caribou was primarily a military tactical transport that in commercial service found itself a small niche in cargo hauling. The United States Army ordered 173 in 1959 and took delivery in 1961 under the designation AC-1 which then changed to CV-2 Caribou.

The majority of Caribou production was destined for military operators, but the type's ruggedness and excellent STOL capabilities also appealed to a select group of commercial users. US certification was awarded on 23 December 1960. Ansett-MAL, which operated a single example in the New Guinea highlands, and AMOCO Ecuador were early customers, as was Air America, (a CIA front in South East Asia during the Vietnam War era for covert operations). Other civil Caribou aircraft entered commercial service after being retired from their military users.

Today only a handful are in civil use.

Operational service

File:Caribou at Dover AMC museum.jpg
A C7 Caribou in its Vietnam service colours at Dover AFB in July 2007.

In response to a US Army requirement for a tactical airlifter to supply the battlefront with troops and supplies and evacuate casualties on the return journey, de Havilland Canada designed the DHC-4. With assistance from Canada's Department of Defence Production, DHC built a prototype demonstrator that flew for the first time on 30 July 1958.

Impressed with the DHC4's STOL capabilities and potential, the US Army ordered five for evaluation as YAC-1s and went on to become the largest Caribou operator. The AC-1 designation was changed in 1962 to CV-2, and then C-7 when the US Army's CV-2s were transferred to the US Air Force in 1967. US and Australian Caribou saw extensive service during the Vietnam conflict.

The U.S. Army purchased 159 of the aircraft and they served their purpose well as a tactical transport during the Vietnam War, where larger cargo aircraft such as the C-123 Provider and the C-130 Hercules could not land on the shorter landing strips. The aircraft could carry 32 troops or two Jeeps or similar light vehicles. The rear loading ramp could also be used for parachute dropping.

In 1967, a political decision was made by the United States Air Force who, believing that all fixed-wing aircraft operations were its own province, demanded that the Army turn over the Caribou. The Army ultimately traded the Caribou to the Air Force in exchange for an end to restrictions on Army helicopter operations. In addition, some US Caribou were captured by North Vietnamese forces and remained in service with that country through to the late 1970s.

Most of the C-7s have since been phased out of the US military. Other notable military operators included: Australia, Brazil, Canada, India, Malaysia and Spain.

In current service, the Royal Australian Air Force still operates 14 Caribous, which are due to be replaced by 2012, while Brazil's Caribous are slowly being replaced by more modern EADS CASA C-295 turboprop cargo airplanes.

Variants

DHC-4 Caribou
STOL tactical transport, utility transport aircraft.
CC-108
Royal Canadian Air Force designation for the DHC-4 Caribou.
YAC-1
This designation was given to five DHC-4 Caribous, sold to the United States Army for evaluation.
AC-1
United States Army destination for the DHC-4 Caribou. Later redesignated CV-2A in 1962.
CV-2A
United States Army AC-1 redesignated in 1962.
CV-2B
This designation was given to a second batch of DHC-4 Caribous, which were sold to the US Army.
C-7A/B
This designation was given to all 134 US Army CV-2A/B Caribous, which were transferred to the US Air Force.
DHC-4A Caribou
Similar to the DHC-4, but this version had an increased take-off weight.
DHC-4T Turbo Caribou
A conversion of the baseline DHC-4 Caribou powered by the PWC PT6A-67T turboprop engines designed, test flown and certified by the Pen Turbo Aviation company.

Operators

Military operators

Template:Country data Abu Dhabi
Template:AUS
Template:BRA
Template:CAM
Template:CAN
Template:CMR
Template:COL[citation needed]
Template:CRC
  • One aircraft used by the Seccion Aérea de la Guardia Civil[1]
Template:GHA
Template:IND
Template:KEN
Template:KWT
Template:LBR[citation needed]
Template:MYS
Template:OMN
Template:ESP
Template:Country data South Vietnam
Template:SWE
  • Swedish Air Force operated one DHC-4 Caribou designated Tp 55 between 1962 and 1965 for evaluation purposes in F7 Wing.[6]
Template:TAN
Template:THA
Template:UGA
Template:USA
Template:VNM
Template:ZAM[citation needed]

Civil operators

Template:AUS
Template:CAN
Template:ECU
Template:GAB
Template:IDN
Template:MLT
Template:PNG
Template:TWN
Template:USA

Survivors

de Havilland AC-1 60-3767
Exhibited at Travis AFB Museum, California
de Havilland AC-1A 62-4188
On display at New England Air Museum, Bradley Airport, Connecticut
de Havilland CV-2B Caribou 63-9756
Exhibited at Museum of Aviation, Warner Robins AFB, Georgia
de Havilland CV-2B Caribou 63-9760
Exhibited at Dover AFB Historical Center, Delaware.
de Havilland C-7A Caribou 62-4193
Exhibited at the National Museum of the United States Air Force, Wright-Patterson AFB, Ohio

Specifications (C-7B)

General characteristics

  • Crew: Three
  • Length: 72.58 ft (22.12 m)
  • Wingspan: 95.58 ft (29.13 m)
  • Height: 31.66 ft (9.65 m)
  • Wing area: 912 ft² (84.7 m²)
  • Empty weight: 18,260 lb (8,283 kg)
  • Loaded weight: 31,000 lb (14,198 kg)
  • Powerplant: 2× Pratt and Whitney R-2000-7M2 Twin Wasp 14-cylinder , 1,450 hp (1,081 kW) each

Performance


See also

Related development

Comparable aircraft

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References

Notes
  1. ↑ Serial MSP002 C-7A MSN 149
  2. ↑ John Andrade, Militair 1982, Aviation Press, London, ISBN 0 907898 01 7 Page 141
  3. ↑ Kuwait Air Force (KAF) entry at the Scramble magazine website
  4. ↑ Malaysian Forces Overview entry at the Scramble magazine website
  5. ↑ Royal Air Force of Oman entry at the Scramble magazine website
  6. ↑ Caribou Roster
  7. ↑ Caribou Roster
  8. ↑ http://www.wings.de.ms
  9. ↑ John Andrade, Militair 1982, Aviation Press, London, ISBN 0 907898 01 7 Page 231
Bibliography

External links

Template:De Havilland Canada Template:US Army airplanes Template:US transport aircraft Template:US STOL and VTOL aircraft Template:Swedish military aircraft

v • d • e
Lists relating to aviation
GeneralTimeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines
MilitaryAir forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft
Notable incidents
and accidents		Military aviation · Airliners · General aviation · Famous aviation-related deaths
RecordsFlight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft

de:de Havilland Canada DHC-4 it:de Havilland Canada DHC-4 Caribou ms:C-7 Caribou ja:C-7 (航空機) th:เดอ ฮาวิลแลนด์ แคนาดา ดีเอชซี-4 คาริบู


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